Key points are not available for this paper at this time.
The art of stitching proteins: D-Cys-ε-Lys and its diastereomer L-Cys-ε-Lys read through the UAG codon (see scheme). As the resulting proteins can participate in native chemical ligation (NCL), this process provides a means to prepare proteins chemoselectively modified (e.g. ubiquitinated) through a peptidic side chain located at the ε position of a rationally selected lysine residue.
Li et al. (Fri,) studied this question.